﻿using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
using System.Text.RegularExpressions;
using System.IO.Compression;
using System.Security.Cryptography.X509Certificates;
using System.Net.Security;
using System.Drawing;
using System.Security.Authentication;


/// <summary>    
/// Http连接操作帮助类    
/// </summary>    
public class HttpHelper : System.IDisposable
{
    private static bool RemoteCertificateValidate(object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors error)
    {
        // trust any certificate!!!    
        System.Console.WriteLine("Warning, trust any certificate");
        //为了通过证书验证，总是返回true    
        return true;
    }


    #region 预定义方变量  
    //默认的编码    
    private Encoding encoding = Encoding.Default;
    //Post数据编码    
    private Encoding postencoding = Encoding.Default;
    //HttpWebRequest对象用来发起请求    
    private HttpWebRequest request = null;
    //获取影响流的数据对象    
    private HttpWebResponse response = null;
    //cookie集合  
    private static CookieCollection cks = new CookieCollection();

    #endregion

    public void Dispose()
    {
        if (request != null)
        {
            request.Abort();
            request = null;
            response.Close();
            response = null;
        }
    }


    #region Public  


    public HttpHelper()
    {
        ServicePointManager.ServerCertificateValidationCallback += RemoteCertificateValidate;//验证服务器证书回调自动验证    
        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
    }

    /// <summary>  
    /// 添加cookies  
    /// </summary>  
    /// <param name="key"></param>  
    /// <param name="value"></param>  
    /// <param name="domain"></param>  
    public static void AddCookie(string key, string value, string domain)
    {
        Cookie c = new Cookie();
        c.Domain = !domain.Contains(":") ? domain : domain.Split(':')[0] == "127.0.0.1" ? "localhost" : domain.Split(':')[0];
        c.Expires = DateTime.Now.AddDays(30);
        c.Name = key;
        c.Path = "/";
        c.Secure = false;
        c.Value = value;
        cks.Add(c);
    }

    /// <summary>  
    /// 初始化cookie  
    /// </summary>  
    /// <param name="result"></param>  
    private void InitCookies(HttpResult result)
    {
        if (result.CookieCollection != null && result.CookieCollection.Count > 0)
        {
            for (int i = 0; i < result.CookieCollection.Count; i++)
            {
                Cookie c = result.CookieCollection[i];
                c.Domain = c.Domain.Trim() == "" ? "localhost" : c.Domain;
                c.Path = c.Path.Trim() == "" ? "/" : c.Path;
                cks.Add(c);
            }
        }
    }

    /// <summary>  
    /// 发送请求时自动带入cookie  
    /// </summary>  
    /// <param name="item"></param>  
    private void AutoCookies(HttpItem item)
    {
        if (cks.Count > 0)
        {
            item.CookieCollection = cks;
        }
    }


    /// <summary>    
    /// 根据相传入的数据，得到相应页面数据    
    /// </summary>    
    /// <param name="item">参数类对象</param>    
    /// <returns>返回HttpResult类型</returns>    
    public HttpResult GetHtml(HttpItem item)
    {
        //返回参数    
        HttpResult result = new HttpResult();
        try
        {
            //准备参数    
            SetRequest(item);
        }
        catch (Exception ex)
        {
            result.Cookie = string.Empty;
            result.Header = null;
            result.Html = ex.Message;
            result.StatusDescription = "配置参数时出错：" + ex.Message;
            //配置参数时出错    
            return result;
        }
        try
        {
            //请求数据    
            using (response = (HttpWebResponse)request.GetResponse())
            {
                GetData(item, result);
            }
        }
        catch (WebException ex)
        {
            using (response = (HttpWebResponse)ex.Response)
            {
                GetData(item, result);
            }
        }
        catch (Exception ex)
        {
            result.Html = ex.Message;
        }
        finally
        {
            if (request != null)
            {
                request.Abort();
            }
            if (response != null)
            {
                response.Close();
            }
        }
        if (item.IsToLower) result.Html = result.Html.ToLower();
        //根据返回的cookie自动加入缓存  
        InitCookies(result);
        return result;
    }
    #endregion


    #region GetData  


    /// <summary>    
    /// 获取数据的并解析的方法    
    /// </summary>    
    /// <param name="item"></param>    
    /// <param name="result"></param>    
    private void GetData(HttpItem item, HttpResult result)
    {
        #region base  
        //获取StatusCode    
        result.StatusCode = response.StatusCode;
        //获取StatusDescription    
        result.StatusDescription = response.StatusDescription;
        //获取Headers    
        result.Header = response.Headers;
        //获取CookieCollection    
        if (response.Cookies != null) result.CookieCollection = response.Cookies;
        //获取set-cookie    
        if (response.Headers["set-cookie"] != null) result.Cookie = response.Headers["set-cookie"];
        #endregion


        #region byte  
        //处理网页Byte    
        byte[] ResponseByte = GetByte();
        #endregion


        #region Html  
        if (item.ResultType == ResultType.Image)
        {
            
        }
        else
        {
            if (ResponseByte != null & ResponseByte.Length > 0)
            {
                //设置编码    
                SetEncoding(item, result, ResponseByte);
                //得到返回的HTML    
                result.Html = encoding.GetString(ResponseByte);
            }
            else
            {
                //没有返回任何Html代码    
                result.Html = string.Empty;
            }
        }
        #endregion
    }
    /// <summary>    
    /// 设置编码    
    /// </summary>    
    /// <param name="item">HttpItem</param>    
    /// <param name="result">HttpResult</param>    
    /// <param name="ResponseByte">byte[]</param>    
    private void SetEncoding(HttpItem item, HttpResult result, byte[] ResponseByte)
    {
        //是否返回Byte类型数据    
        if (item.ResultType == ResultType.Byte) result.ResultByte = ResponseByte;
        //从这里开始我们要无视编码了    
        if (encoding == null)
        {
            Match meta = Regex.Match(Encoding.Default.GetString(ResponseByte), "<meta[^<]*charset=([^<]*)[\"']", RegexOptions.IgnoreCase);
            string c = string.Empty;
            if (meta != null && meta.Groups.Count > 0)
            {
                c = meta.Groups[1].Value.ToLower().Trim();
            }
            if (c.Length > 2)
            {
                try
                {
                    encoding = Encoding.GetEncoding(c.Replace("\"", string.Empty).Replace("'", "").Replace(";", "").Replace("iso-8859-1", "gbk").Trim());
                }
                catch
                {
                    if (string.IsNullOrEmpty(response.CharacterSet))
                    {
                        encoding = Encoding.UTF8;
                    }
                    else
                    {
                        encoding = Encoding.GetEncoding(response.CharacterSet);
                    }
                }
            }
            else
            {
                if (string.IsNullOrEmpty(response.CharacterSet))
                {
                    encoding = Encoding.UTF8;
                }
                else
                {
                    encoding = Encoding.GetEncoding(response.CharacterSet);
                }
            }
        }
    }
    /// <summary>    
    /// 提取网页Byte    
    /// </summary>    
    /// <returns></returns>    
    private byte[] GetByte()
    {
        byte[] ResponseByte = null;
        MemoryStream _stream = new MemoryStream();

        //GZIIP处理    
        if (response.ContentEncoding != null && response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase))
        {
            //开始读取流并设置编码方式    
            _stream = GetMemoryStream(new GZipStream(response.GetResponseStream(), CompressionMode.Decompress));
        }
        else
        {
            //开始读取流并设置编码方式    
            _stream = GetMemoryStream(response.GetResponseStream());
        }
        //获取Byte    
        ResponseByte = _stream.ToArray();
        _stream.Close();
        return ResponseByte;
    }


    /// <summary>    
    /// 4.0以下.net版本取数据使用    
    /// </summary>    
    /// <param name="streamResponse">流</param>    
    private MemoryStream GetMemoryStream(Stream streamResponse)
    {
        using (MemoryStream _stream = new MemoryStream())
        {
            int Length = 256;
            Byte[] buffer = new Byte[Length];
            int bytesRead = streamResponse.Read(buffer, 0, Length);
            while (bytesRead > 0)
            {
                _stream.Write(buffer, 0, bytesRead);
                bytesRead = streamResponse.Read(buffer, 0, Length);
            }
            return _stream;
        }
    }
    #endregion


    #region SetRequest  


    /// <summary>    
    /// 为请求准备参数    
    /// </summary>    
    ///<param name="item">参数列表</param>    
    private void SetRequest(HttpItem item)
    {
        // 验证证书    
        SetCer(item);
        //设置Header参数    
        if (item.Header != null && item.Header.Count > 0) foreach (string key in item.Header.AllKeys)
            {
                request.Headers.Add(key, item.Header[key]);
            }
        // 设置代理    
        SetProxy(item);
        if (item.ProtocolVersion != null) request.ProtocolVersion = item.ProtocolVersion;
        request.ServicePoint.Expect100Continue = item.Expect100Continue;
        //请求方式Get或者Post或Put  
        request.Method = item.Method;
        request.Timeout = item.Timeout;
        request.KeepAlive = item.KeepAlive;
        request.ReadWriteTimeout = item.ReadWriteTimeout;
        if (item.IfModifiedSince != null) request.IfModifiedSince = Convert.ToDateTime(item.IfModifiedSince);
        //Accept    
        request.Accept = item.Accept;
        //ContentType返回类型    
        request.ContentType = item.ContentType;
        //UserAgent客户端的访问类型，包括浏览器版本和操作系统信息    
        request.UserAgent = item.UserAgent;
        // 编码    
        encoding = item.Encoding;
        //设置安全凭证    
        request.Credentials = item.ICredentials;
        //自动带入cookie  
        AutoCookies(item);
        //设置Cookie    
        SetCookie(item);
        //来源地址    
        request.Referer = item.Referer;
        //是否执行跳转功能    
        request.AllowAutoRedirect = item.Allowautoredirect;
        if (!string.IsNullOrEmpty(item.Host))
        {
            request.Host = item.Host;
        }
        if (item.MaximumAutomaticRedirections > 0)
        {
            request.MaximumAutomaticRedirections = item.MaximumAutomaticRedirections;
        }
        //设置Post数据    
        SetPostData(item);
        //设置最大连接    
        if (item.Connectionlimit > 0) request.ServicePoint.ConnectionLimit = item.Connectionlimit;
    }
    /// <summary>    
    /// 设置证书    
    /// </summary>    
    /// <param name="item"></param>    
    private void SetCer(HttpItem item)
    {
        if (!string.IsNullOrEmpty(item.CerPath))
        {
            //这一句一定要写在创建连接的前面。使用回调的方法进行证书验证。    
            ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
            //初始化对像，并设置请求的URL地址    
            request = (HttpWebRequest)WebRequest.Create(item.URL);
            SetCerList(item);
            //将证书添加到请求里    
            request.ClientCertificates.Add(new X509Certificate(item.CerPath));
        }
        else
        {
            //初始化对像，并设置请求的URL地址    
            request = (HttpWebRequest)WebRequest.Create(item.URL);
            SetCerList(item);
        }
    }
    /// <summary>    
    /// 设置多个证书    
    /// </summary>    
    /// <param name="item"></param>    
    private void SetCerList(HttpItem item)
    {
        if (item.ClentCertificates != null && item.ClentCertificates.Count > 0)
        {
            foreach (X509Certificate c in item.ClentCertificates)
            {
                request.ClientCertificates.Add(c);
            }
        }
    }
    /// <summary>    
    /// 设置Cookie    
    /// </summary>    
    /// <param name="item">Http参数</param>    
    private void SetCookie(HttpItem item)
    {
        if (!string.IsNullOrEmpty(item.Cookie)) request.Headers[HttpRequestHeader.Cookie] = item.Cookie;
        request.CookieContainer = new CookieContainer();
        if (item.CookieCollection != null && item.CookieCollection.Count > 0)
            request.CookieContainer.Add(item.CookieCollection);
    }
    /// <summary>    
    /// 设置Post数据    
    /// </summary>    
    /// <param name="item">Http参数</param>    
    private void SetPostData(HttpItem item)
    {
        //验证在得到结果时是否有传入数据    
        //if (request.Method.Trim().ToLower().Contains("post") || request.Method.Trim().ToLower().Contains("put"))
        //{
            if (item.PostEncoding != null)
            {
                postencoding = item.PostEncoding;
            }
            byte[] buffer = null;
            //写入Byte类型    
            if (item.PostDataType == PostDataType.Byte && item.PostdataByte != null && item.PostdataByte.Length > 0)
            {
                //验证在得到结果时是否有传入数据    
                buffer = item.PostdataByte;
            }//写入文件    
            else if (item.PostDataType == PostDataType.FilePath && !string.IsNullOrEmpty(item.Postdata))
            {
                StreamReader r = new StreamReader(item.Postdata, postencoding);
                buffer = postencoding.GetBytes(r.ReadToEnd());
                r.Close();
            } //写入字符串    
            else if (!string.IsNullOrEmpty(item.Postdata))
            {
                buffer = postencoding.GetBytes(item.Postdata);
            }
            if (buffer != null)
            {
                request.ContentLength = buffer.Length;
                request.GetRequestStream().Write(buffer, 0, buffer.Length);
            }
        //}
    }
    /// <summary>    
    /// 设置代理    
    /// </summary>    
    /// <param name="item">参数对象</param>    
    private void SetProxy(HttpItem item)
    {
        bool isIeProxy = false;
        if (!string.IsNullOrEmpty(item.ProxyIp))
        {
            isIeProxy = item.ProxyIp.ToLower().Contains("ieproxy");
        }
        if (!string.IsNullOrEmpty(item.ProxyIp) && !isIeProxy)
        {
            //设置代理服务器    
            if (item.ProxyIp.Contains(":"))
            {
                string[] plist = item.ProxyIp.Split(':');
                WebProxy myProxy = new WebProxy(plist[0].Trim(), Convert.ToInt32(plist[1].Trim()));
                //建议连接    
                if (!string.IsNullOrEmpty(item.ProxyUserName) && !string.IsNullOrEmpty(item.ProxyPwd)) {
                    myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);
                }
                //给当前请求对象    
                request.Proxy = myProxy;
            }
            else
            {
                WebProxy myProxy = new WebProxy(item.ProxyIp, false);
                //建议连接    
                if (!string.IsNullOrEmpty(item.ProxyUserName) && !string.IsNullOrEmpty(item.ProxyPwd)){
                    myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);
                }
                //给当前请求对象    
                request.Proxy = myProxy;
            }
        }
        else if (isIeProxy)
        {
            //设置为IE代理    
        }
        else
        {
            request.Proxy = null;
        }
    }
    #endregion


    #region private main  
    /// <summary>    
    /// 回调验证证书问题    
    /// </summary>    
    /// <param name="sender">流对象</param>    
    /// <param name="certificate">证书</param>    
    /// <param name="chain">X509Chain</param>    
    /// <param name="errors">SslPolicyErrors</param>    
    /// <returns>bool</returns>    
    private bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; }
    #endregion
}
/// <summary>    
/// Http请求参考类    
/// </summary>    
public class HttpItem
{
    string _URL = string.Empty;
    /// <summary>    
    /// 请求URL必须填写    
    /// </summary>    
    public string URL
    {
        get { return _URL; }
        set { _URL = value; }
    }
    string _Method = "GET";
    /// <summary>    
    /// 请求方式默认为GET方式,当为POST方式时必须设置Postdata的值    
    /// </summary>    
    public string Method
    {
        get { return _Method; }
        set { _Method = value; }
    }
    int _Timeout = 300000;
    /// <summary>    
    /// 默认请求超时时间    
    /// </summary>    
    public int Timeout
    {
        get { return _Timeout; }
        set { _Timeout = value; }
    }
    int _ReadWriteTimeout = 30000;
    /// <summary>    
    /// 默认写入Post数据超时间    
    /// </summary>    
    public int ReadWriteTimeout
    {
        get { return _ReadWriteTimeout; }
        set { _ReadWriteTimeout = value; }
    }
    Boolean _KeepAlive = true;
    /// <summary>    
    ///  获取或设置一个值，该值指示是否与 Internet 资源建立持久性连接默认为true。    
    /// </summary>    
    public Boolean KeepAlive
    {
        get { return _KeepAlive; }
        set { _KeepAlive = value; }
    }
    string _Accept = "text/html, application/xhtml+xml, */*";
    /// <summary>    
    /// 请求标头值 默认为text/html, application/xhtml+xml, */*    
    /// </summary>    
    public string Accept
    {
        get { return _Accept; }
        set { _Accept = value; }
    }
    string _ContentType = "text/html";
    /// <summary>    
    /// 请求返回类型默认 text/html    
    /// </summary>    
    public string ContentType
    {
        get { return _ContentType; }
        set { _ContentType = value; }
    }

    string _UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";
    /// <summary>    
    /// 客户端访问信息默认Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)    
    /// </summary>    
    public string UserAgent
    {
        get { return _UserAgent; }
        set { _UserAgent = value; }
    }


    Encoding _Encoding = null;
    /// <summary>    
    /// 返回数据编码默认为NUll,可以自动识别,一般为utf-8,gbk,gb2312    
    /// </summary>    
    public Encoding Encoding
    {
        get { return _Encoding; }
        set { _Encoding = value; }
    }
    private PostDataType _PostDataType = PostDataType.String;
    /// <summary>    
    /// Post的数据类型    
    /// </summary>    
    public PostDataType PostDataType
    {
        get { return _PostDataType; }
        set { _PostDataType = value; }
    }
    string _Postdata = string.Empty;
    /// <summary>    
    /// Post请求时要发送的字符串Post数据    
    /// </summary>    
    public string Postdata
    {
        get { return _Postdata; }
        set { _Postdata = value; }
    }
    private byte[] _PostdataByte = null;
    /// <summary>    
    /// Post请求时要发送的Byte类型的Post数据    
    /// </summary>    
    public byte[] PostdataByte
    {
        get { return _PostdataByte; }
        set { _PostdataByte = value; }
    }
    private WebProxy _WebProxy;
    /// <summary>    
    /// 设置代理对象，不想使用IE默认配置就设置为Null，而且不要设置ProxyIp    
    /// </summary>    
    public WebProxy WebProxy
    {
        get { return _WebProxy; }
        set { _WebProxy = value; }
    }


    CookieCollection cookiecollection = null;
    /// <summary>    
    /// Cookie对象集合    
    /// </summary>    
    public CookieCollection CookieCollection
    {
        get { return cookiecollection; }
        set { cookiecollection = value; }
    }
    string _Cookie = string.Empty;
    /// <summary>    
    /// 请求时的Cookie    
    /// </summary>    
    public string Cookie
    {
        get { return _Cookie; }
        set { _Cookie = value; }
    }
    string _Host = string.Empty;
    public string Host
    {
        get { return _Host; }
        set { _Host = value; }
    }
    string _Referer = string.Empty;
    /// <summary>    
    /// 来源地址，上次访问地址    
    /// </summary>    
    public string Referer
    {
        get { return _Referer; }
        set { _Referer = value; }
    }
    string _CerPath = string.Empty;
    /// <summary>    
    /// 证书绝对路径    
    /// </summary>    
    public string CerPath
    {
        get { return _CerPath; }
        set { _CerPath = value; }
    }
    private Boolean isToLower = false;
    /// <summary>    
    /// 是否设置为全文小写，默认为不转化    
    /// </summary>    
    public Boolean IsToLower
    {
        get { return isToLower; }
        set { isToLower = value; }
    }
    private Boolean allowautoredirect = false;
    /// <summary>    
    /// 支持跳转页面，查询结果将是跳转后的页面，默认是不跳转    
    /// </summary>    
    public Boolean Allowautoredirect
    {
        get { return allowautoredirect; }
        set { allowautoredirect = value; }
    }
    private int connectionlimit = 1024;
    /// <summary>    
    /// 最大连接数    
    /// </summary>    
    public int Connectionlimit
    {
        get { return connectionlimit; }
        set { connectionlimit = value; }
    }
    private string proxyusername = string.Empty;
    /// <summary>    
    /// 代理Proxy 服务器用户名    
    /// </summary>    
    public string ProxyUserName
    {
        get { return proxyusername; }
        set { proxyusername = value; }
    }
    private string proxypwd = string.Empty;
    /// <summary>    
    /// 代理 服务器密码    
    /// </summary>    
    public string ProxyPwd
    {
        get { return proxypwd; }
        set { proxypwd = value; }
    }
    private string proxyip = string.Empty;
    /// <summary>    
    /// 代理 服务IP ,如果要使用IE代理就设置为ieproxy    
    /// </summary>    
    public string ProxyIp
    {
        get { return proxyip; }
        set { proxyip = value; }
    }
    private ResultType resulttype = ResultType.String;
    /// <summary>    
    /// 设置返回类型String和Byte    
    /// </summary>    
    public ResultType ResultType
    {
        get { return resulttype; }
        set { resulttype = value; }
    }
    private WebHeaderCollection header = new WebHeaderCollection();
    /// <summary>    
    /// header对象    
    /// </summary>    
    public WebHeaderCollection Header
    {
        get { return header; }
        set { header = value; }
    }


    private Version _ProtocolVersion;


    /// <summary>    
    //     获取或设置用于请求的 HTTP 版本。返回结果:用于请求的 HTTP 版本。默认为 System.Net.HttpVersion.Version11。    
    /// </summary>    
    public Version ProtocolVersion
    {
        get { return _ProtocolVersion; }
        set { _ProtocolVersion = value; }
    }
    private Boolean _expect100continue = true;
    /// <summary>    
    ///  获取或设置一个 System.Boolean 值，该值确定是否使用 100-Continue 行为。如果 POST 请求需要 100-Continue 响应，则为 true；否则为 false。默认值为 true。    
    /// </summary>    
    public Boolean Expect100Continue
    {
        get { return _expect100continue; }
        set { _expect100continue = value; }
    }
    private X509CertificateCollection _ClentCertificates;
    /// <summary>    
    /// 设置509证书集合    
    /// </summary>    
    public X509CertificateCollection ClentCertificates
    {
        get { return _ClentCertificates; }
        set { _ClentCertificates = value; }
    }
    private Encoding _PostEncoding;
    /// <summary>    
    /// 设置或获取Post参数编码,默认的为Default编码    
    /// </summary>    
    public Encoding PostEncoding
    {
        get { return _PostEncoding; }
        set { _PostEncoding = value; }
    }
    private ResultCookieType _ResultCookieType = ResultCookieType.CookieCollection;
    /// <summary>    
    /// Cookie返回类型,默认的是只返回字符串类型    
    /// </summary>    
    public ResultCookieType ResultCookieType
    {
        get { return _ResultCookieType; }
        set { _ResultCookieType = value; }
    }


    private ICredentials _ICredentials = CredentialCache.DefaultCredentials;
    /// <summary>    
    /// 获取或设置请求的身份验证信息。    
    /// </summary>    
    public ICredentials ICredentials
    {
        get { return _ICredentials; }
        set { _ICredentials = value; }
    }
    /// <summary>    
    /// 设置请求将跟随的重定向的最大数目    
    /// </summary>    
    private int _MaximumAutomaticRedirections;


    public int MaximumAutomaticRedirections
    {
        get { return _MaximumAutomaticRedirections; }
        set { _MaximumAutomaticRedirections = value; }
    }


    private DateTime? _IfModifiedSince = null;
    /// <summary>    
    /// 获取和设置IfModifiedSince，默认为当前日期和时间    
    /// </summary>    
    public DateTime? IfModifiedSince
    {
        get { return _IfModifiedSince; }
        set { _IfModifiedSince = value; }
    }


}
/// <summary>    
/// Http返回参数类    
/// </summary>    
public class HttpResult
{
    private string _Cookie;
    /// <summary>    
    /// Http请求返回的Cookie    
    /// </summary>    
    public string Cookie
    {
        get { return _Cookie; }
        set { _Cookie = value; }
    }


    private CookieCollection _CookieCollection;
    /// <summary>    
    /// Cookie对象集合    
    /// </summary>    
    public CookieCollection CookieCollection
    {
        get { return _CookieCollection; }
        set { _CookieCollection = value; }
    }
    private string _Html;
    /// <summary>    
    /// 返回的String类型数据 只有ResultType.String时才返回数据，其它情况为空    
    /// </summary>    
    public string Html
    {
        get { return _Html; }
        set { _Html = value; }
    }
    private byte[] _ResultByte;
    /// <summary>    
    /// 返回的Byte数组 只有ResultType.Byte时才返回数据，其它情况为空    
    /// </summary>    
    public byte[] ResultByte
    {
        get { return _ResultByte; }
        set { _ResultByte = value; }
    }
    private WebHeaderCollection _Header;
    /// <summary>    
    /// header对象    
    /// </summary>    
    public WebHeaderCollection Header
    {
        get { return _Header; }
        set { _Header = value; }
    }
    private string _StatusDescription;
    /// <summary>    
    /// 返回状态说明    
    /// </summary>    
    public string StatusDescription
    {
        get { return _StatusDescription; }
        set { _StatusDescription = value; }
    }
    private HttpStatusCode _StatusCode;
    /// <summary>    
    /// 返回状态码,默认为OK    
    /// </summary>    
    public HttpStatusCode StatusCode
    {
        get { return _StatusCode; }
        set { _StatusCode = value; }
    }

}
/// <summary>    
/// 返回类型    
/// </summary>    
public enum ResultType
{
    /// <summary>    
    /// 表示只返回字符串 只有Html有数据    
    /// </summary>    
    String,
    /// <summary>    
    /// 表示返回字符串和字节流 ResultByte和Html都有数据返回    
    /// </summary>    
    Byte,
    /// <summary>    
    /// 返回图片    
    /// </summary>    
    Image
}
/// <summary>    
/// Post的数据格式默认为string    
/// </summary>    
public enum PostDataType
{
    /// <summary>    
    /// 字符串类型，这时编码Encoding可不设置    
    /// </summary>    
    String,
    /// <summary>    
    /// Byte类型，需要设置PostdataByte参数的值编码Encoding可设置为空    
    /// </summary>    
    Byte,
    /// <summary>    
    /// 传文件，Postdata必须设置为文件的绝对路径，必须设置Encoding的值    
    /// </summary>    
    FilePath
}
/// <summary>    
/// Cookie返回类型    
/// </summary>    
public enum ResultCookieType
{
    /// <summary>    
    /// 只返回字符串类型的Cookie    
    /// </summary>    
    String,
    /// <summary>    
    /// CookieCollection格式的Cookie集合同时也返回String类型的cookie    
    /// </summary>    
    CookieCollection
}